Grazing Occultation of Titan Magnitude 8.5 [Red = 8.5] Date: 2024 Jun 27 16h 22m, to 2024 Jun 27 16h 35m Nominal site altitude 0m - About 250 km north of Saturn inner N. limit E. Longit. Latitude U.T. Sun Moon TanZ PA AA CA o ' " o ' " h m s Alt Alt Az o o o Inner limit - Titan fully obscured -130 0 0 38 32 16.7 16 21 58 33 32 230 1.61 322.0 343.75 15.50N -129 0 0 39 1 39.7 16 22 52 34 31 231 1.68 322.3 344.02 15.23N -128 0 0 39 30 5.5 16 23 44 35 30 232 1.75 322.6 344.29 14.96N -127 0 0 39 57 35.9 16 24 33 36 29 232 1.83 322.8 344.55 14.70N -126 0 0 40 24 12.6 16 25 19 37 28 233 1.91 323.1 344.81 14.44N -125 0 0 40 49 57.2 16 26 3 38 27 234 1.99 323.3 345.06 14.19N -124 0 0 41 14 51.4 16 26 44 39 26 235 2.07 323.6 345.31 13.94N -123 0 0 41 38 56.7 16 27 23 39 25 236 2.17 323.8 345.55 13.70N -122 0 0 42 2 14.6 16 27 59 40 24 237 2.26 324.1 345.80 13.46N -121 0 0 42 24 46.5 16 28 33 41 23 238 2.36 324.3 346.03 13.22N -120 0 0 42 46 33.7 16 29 6 42 22 238 2.47 324.5 346.26 12.99N -119 0 0 43 7 37.5 16 29 36 43 21 239 2.59 324.8 346.49 12.76N -118 0 0 43 27 59.1 16 30 5 43 20 240 2.71 325.0 346.72 12.54N -117 0 0 43 47 39.9 16 30 31 44 19 241 2.84 325.2 346.94 12.32N -116 0 0 44 6 40.7 16 30 56 45 19 242 2.98 325.4 347.15 12.10N -115 0 0 44 25 2.8 16 31 19 46 18 242 3.13 325.6 347.37 11.89N -114 0 0 44 42 47.1 16 31 41 46 17 243 3.29 325.8 347.58 11.68N -113 0 0 44 59 54.7 16 32 1 47 16 244 3.47 326.0 347.78 11.47N -112 0 0 45 16 26.4 16 32 20 48 15 245 3.66 326.3 347.98 11.27N -111 0 0 45 32 23.0 16 32 37 48 14 246 3.88 326.4 348.18 11.07N -110 0 0 45 47 45.8 16 32 53 49 14 246 4.11 326.6 348.38 10.87N -109 0 0 46 2 35.4 16 33 7 50 13 247 4.36 326.8 348.57 10.68N -108 0 0 46 16 52.6 16 33 20 50 12 248 4.65 327.0 348.76 10.49N -107 0 0 46 30 38.2 16 33 32 51 11 249 4.97 327.2 348.95 10.31N -106 0 0 46 43 52.8 16 33 43 51 11 249 5.33 327.4 349.13 10.12N -105 0 0 46 56 37.1 16 33 52 52 10 250 5.74 327.6 349.31 9.94N -104 0 0 47 8 51.9 16 34 1 52 9 251 6.21 327.8 349.49 9.76N -103 0 0 47 20 37.7 16 34 8 53 8 252 6.75 327.9 349.66 9.59N -102 0 0 47 31 55.1 16 34 14 53 8 252 7.39 328.1 349.84 9.42N -101 0 0 47 42 44.8 16 34 20 54 7 253 8.15 328.3 350.01 9.25N -100 0 0 47 53 7.3 16 34 24 54 6 254 9.08 328.4 350.17 9.08N - 99 0 0 48 3 3.1 16 34 27 55 6 255 10.22 328.6 350.34 8.92N - 98 0 0 48 12 32.6 16 34 30 55 5 255 11.68 328.8 350.50 8.75N - 97 0 0 48 21 36.3 16 34 31 56 4 256 13.60 328.9 350.66 8.59N - 96 0 0 48 30 14.7 16 34 32 56 4 257 16.24 329.1 350.82 8.44N Outer limit - Titan just touches the moon -130 0 0 38 33 10.3 16 21 58 33 32 230 1.62 322.0 343.76 15.49N -129 0 0 39 2 32.9 16 22 53 34 31 231 1.68 322.3 344.03 15.23N -128 0 0 39 30 58.4 16 23 44 35 30 232 1.75 322.6 344.29 14.96N -127 0 0 39 58 28.4 16 24 33 36 29 232 1.83 322.8 344.55 14.70N -126 0 0 40 25 4.8 16 25 19 37 28 233 1.91 323.1 344.81 14.44N -125 0 0 40 50 49.1 16 26 3 38 27 234 1.99 323.3 345.06 14.19N -124 0 0 41 15 43.0 16 26 44 39 26 235 2.08 323.6 345.31 13.94N -123 0 0 41 39 48.1 16 27 22 39 25 236 2.17 323.8 345.56 13.70N -122 0 0 42 3 5.7 16 27 59 40 24 237 2.26 324.1 345.80 13.46N -121 0 0 42 25 37.3 16 28 33 41 23 238 2.36 324.3 346.03 13.22N -120 0 0 42 47 24.3 16 29 6 42 22 238 2.47 324.5 346.27 12.99N -119 0 0 43 8 27.8 16 29 36 43 21 239 2.59 324.8 346.49 12.76N -118 0 0 43 28 49.3 16 30 4 43 20 240 2.71 325.0 346.72 12.54N -117 0 0 43 48 29.9 16 30 31 44 19 241 2.84 325.2 346.94 12.31N -116 0 0 44 7 30.5 16 30 56 45 19 242 2.98 325.4 347.16 12.10N -115 0 0 44 25 52.3 16 31 19 46 18 242 3.13 325.6 347.37 11.89N -114 0 0 44 43 36.5 16 31 41 46 17 243 3.29 325.8 347.58 11.68N -113 0 0 45 0 43.9 16 32 1 47 16 244 3.47 326.0 347.78 11.47N -112 0 0 45 17 15.5 16 32 19 48 15 245 3.67 326.3 347.99 11.27N -111 0 0 45 33 11.9 16 32 36 48 14 245 3.88 326.5 348.18 11.07N -110 0 0 45 48 34.6 16 32 52 49 14 246 4.11 326.6 348.38 10.87N -109 0 0 46 3 24.0 16 33 7 50 13 247 4.37 326.8 348.57 10.68N -108 0 0 46 17 41.1 16 33 20 50 12 248 4.65 327.0 348.76 10.49N -107 0 0 46 31 26.5 16 33 32 51 11 249 4.97 327.2 348.95 10.31N -106 0 0 46 44 41.0 16 33 42 51 11 249 5.33 327.4 349.13 10.12N -105 0 0 46 57 25.2 16 33 52 52 10 250 5.74 327.6 349.31 9.94N -104 0 0 47 9 39.9 16 34 0 52 9 251 6.21 327.8 349.49 9.76N -103 0 0 47 21 25.6 16 34 8 53 8 252 6.75 327.9 349.67 9.59N -102 0 0 47 32 43.0 16 34 14 53 8 252 7.39 328.1 349.84 9.42N -101 0 0 47 43 32.6 16 34 19 54 7 253 8.16 328.3 350.01 9.25N -100 0 0 47 53 55.0 16 34 24 54 6 254 9.08 328.4 350.17 9.08N - 99 0 0 48 3 50.7 16 34 27 55 6 255 10.23 328.6 350.34 8.92N - 98 0 0 48 13 20.2 16 34 29 55 5 255 11.69 328.8 350.50 8.75N - 97 0 0 48 22 23.8 16 34 31 56 4 256 13.61 328.9 350.66 8.59N - 96 0 0 48 31 2.2 16 34 31 56 4 257 16.25 329.1 350.82 8.44N Path coordinates are referred to WGS84 (as used by GPS), with the nominal site altitude being referenced to Mean Sea Level. The path is adjusted for the effects of refraction at low moon altitudes. Angular diameter of Titan = 0.76 arcsec Librations Long -0.92 Lat +2.83 P +347.73 D -2.31 Illumination of moon 65%- Elongation of Moon 107 Vertical Profile Scale approx. 2.00 km/arcsec at mean distance of moon Horizontal Scale Factor 1.85 deg/min At longitude -113.00: Limiting Magnitudes for various telescope apertures (in cm) CA\Tdia 5 10 15 20 25 30 35 7.5 2.6 3.9 4.5 4.8 5.0 5.2 5.2 9.5 2.6 3.9 4.5 4.8 5.0 5.2 5.2 11.5 2.6 3.9 4.5 4.8 5.0 5.2 5.2 13.5 2.6 3.9 4.5 4.8 5.0 5.2 5.2 15.5 2.6 3.9 4.5 4.8 5.0 5.2 5.2